Low voltage adaptive equalizer

摘要

The present invention is related to an adaptive equalizer comprising multiple tuning circuits that generate tuning signals. Each tuning signal can typically induce higher frequency gain up to a limited level, e.g. +5dB, at the upper data frequency for compensation of high frequency losses in the connected transmission channel. Several tuning signals can tune one adaptive amplifying compensation stage. In its adaptive amplifying compensation stage the tuning signal can generate through its tuning function, non-ideal small-signal and large-signal transfer behaviour. However, by limiting the amount of higher frequency gain to maximum +8dB per tuning function, and by having only one tuning function active at a time the resulting deterministic jitter remains tolerable. Several non-ideal behaving adaptive amplifying compensation stages and their tuning functions are disclosed. Especially at low power supply voltage the merits of the present invention become apparent. <IMAGE>